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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#287465#7872. 崩坏天际线275307894a100 ✓590ms29968kbC++146.2kb2023-12-20 16:46:272023-12-20 16:46:27

Judging History

你现在查看的是最新测评结果

  • [2023-12-20 16:46:27]
  • 评测
  • 测评结果:100
  • 用时:590ms
  • 内存:29968kb
  • [2023-12-20 16:46:27]
  • 提交

answer

#include<bits/stdc++.h>
#define Gc() getchar() 
#define Me(x,y) memset(x,y,sizeof(x))
#define Mc(x,y) memcpy(x,y,sizeof(x))
#define d(x,y) ((m)*(x-1)+(y))
#define R(n) (rnd()%(n)+1)
#define Pc(x) putchar(x)
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define eb emplace_back
using namespace std;using ll=long long;using db=double;using lb=long db;using ui=unsigned;using ull=unsigned long long;using pii=pair<int,int>;using LL=__int128;
const int N=5e4+5,M=N*4+5,K=(1<<25)+5,mod=998244353,Mod=mod-1;const db eps=1e-9;const int INF=1e9+7;mt19937 rnd(time(0));
const int i2=(mod+1)/2;
int B,n,q,op[N],l[N],r[N];
struct node{
	int l,r;mutable ll w;
	bool operator <(const node &B)const{return l^B.l?l<B.l:r<B.r;}
};
node seg[M];int sh,vis[M];
namespace FHQ{
	int Ct,l[M],r[M],rd[M],val[M];ll w[M],sum[M],g[M];
	void Cl(){for(int i=1;i<=Ct;i++) l[i]=r[i]=rd[i]=val[i]=w[i]=sum[i]=g[i]=0;Ct=0;}
	void up(int v){sum[v]=(w[v]+sum[l[v]]+sum[r[v]])%mod;}
	void Pg(int v,int ww){g[v]=g[v]*ww%mod;w[v]=w[v]*ww%mod;sum[v]=sum[v]*ww%mod;}
	void P(int v){if(g[v]^1) Pg(l[v],g[v]),Pg(r[v],g[v]),g[v]=1;}
	void split(int x,int v,int &a,int &b){
		if(!v){a=b=0;return;}
		P(v);
		if(x>=val[v]) a=v,split(x,r[v],r[v],b);
		else b=v,split(x,l[v],a,l[v]);
		up(v);
	}
	int merge(int x,int y){
		if(!x||!y) return x|y;P(x);P(y);
		if(rd[x]<rd[y]) return r[x]=merge(r[x],y),up(x),x;
		else return l[y]=merge(x,l[y]),up(y),y;
	}
	int newnode(int x,int ww){rd[++Ct]=rnd();val[Ct]=x;sum[Ct]=w[Ct]=ww;g[Ct]=1;return Ct;}
	void add(int x,int w,int &v){
		int R1,R2;split(x,v,R1,R2);
		v=merge(merge(R1,newnode(x,w)),R2);
	}
	void qry(int v,int x,vector<node> &ans){
		if(!v) return;P(v);
		// cerr<<x<<' '<<val[v]<<'\n';
		ans.emplace_back((node){min(x,val[v]),max(x,val[v]),w[v]});
		qry(l[v],x,ans);qry(r[v],x,ans);
	}
}
int R1[N],R2[N];
namespace Tree{
	#define ls v<<1
	#define rs v<<1|1
	vector<int> S[M];
	void clr(int x,int y,int l=1,int r=n,int v=1){
		if(x<=l&&r<=y) return S[v].clear();
		int m=l+r>>1;x<=m&&(clr(x,y,l,m,ls),0);y>m&&(clr(x,y,m+1,r,rs),0);
	}
	void add(int x,int y,int z,int l=1,int r=n,int v=1){
		if(x>y) return;if(x<=l&&r<=y) {S[v].emplace_back(z);return;}
		int m=l+r>>1;x<=m&&(add(x,y,z,l,m,ls),0);y>m&&(add(x,y,z,m+1,r,rs),0);
	}
	void modify(int x,int l=1,int r=n,int v=1){
		for(int i:S[v]) if(!vis[i]){
			vis[i]=1;
			FHQ::add(seg[i].l,seg[i].w*i2%mod,R2[x]);
			FHQ::add(seg[i].r,seg[i].w*i2%mod,R1[x]);
		}
		S[v].clear();if(l==r) return;int m=l+r>>1;
		x<=m?modify(x,l,m,ls):modify(x,m+1,r,rs);
	}
}
set<node> f;
set<int> g;
void add(int x,int y,ll w){
	auto p=f.LB((node){x,0,0});
	if(p==f.end()||p->l!=x) f.insert((node){x,y,w});
	else p->w=(p->w+w)%mod; 
}
vector<node> calc(int x,int y){
	if(x==y) {
		if(op[x]==1) return {(node){l[x],r[x],1}};
		else return {};
	}
	int m=x+y>>1;
	vector<node> p=calc(x,m),ans=calc(m+1,y);
	vector<int> pt;
	for(auto i:p) pt.emplace_back(i.l),pt.emplace_back(i.r);
	for(int i=m+1;i<=y;i++) if(op[i]==2) pt.emplace_back(l[i]);
	sort(pt.begin(),pt.end());pt.erase(unique(pt.begin(),pt.end()),pt.end());
	for(int i=1;i<=p.size();i++) Tree::add(p[i-1].l+1,p[i-1].r-1,i),seg[i]=p[i-1],vis[i]=0;
	for(int j=m+1;j<=y;j++)if(op[j]==2){
		auto p=f.LB((node){l[j],0,0});
		if(p!=f.begin()&&(--p)->r>l[j]){
			auto q=*p;f.erase(p);
			f.insert((node){q.l,l[j],q.w*i2%mod});
			f.insert((node){l[j],q.r,q.w*i2%mod});
		}
		if(!g.count(l[j])){
			auto p=g.LB(l[j]);
			if(p!=g.end()){
				FHQ::split(l[j]-1,R2[*p],R2[l[j]],R2[*p]);
				FHQ::Pg(R2[l[j]],i2);
				add(l[j],*p,FHQ::sum[R2[l[j]]]);
			}
			if(p!=g.begin()){
				p--;FHQ::split(l[j],R1[*p],R1[*p],R1[l[j]]);
				FHQ::Pg(R1[l[j]],i2);
				add(*p,l[j],FHQ::sum[R1[l[j]]]);
			}
			g.insert(l[j]);
		}
		Tree::modify(l[j]);
	}
	for(auto j:f) ans.emplace_back(j);
	for(int i=1;i<=p.size();i++) if(!vis[i]) ans.emplace_back(seg[i]);
	for(int j:pt) FHQ::qry(R1[j],j,ans),FHQ::qry(R2[j],j,ans);
	for(int i=1;i<=p.size();i++) Tree::clr(seg[i].l+1,seg[i].r-1);
	FHQ::Cl();for(int j:pt) R1[j]=R2[j]=0;f.clear();g.clear();
	sort(ans.begin(),ans.end());
	vector<node> tot;
	for(auto i:ans)if(i.l^i.r){
		if(tot.empty()||tot.back().l^i.l||tot.back().r^i.r) tot.emplace_back(i);
		else tot.back().w=(tot.back().w+i.w)%mod;
	}
	// cerr<<x<<' '<<y<<'\n';
	// for(auto i:tot) cerr<<i.l<<' '<<i.r<<' '<<i.w<<'\n';
	return tot;
}
void Solve(){
	int i,j,h;scanf("%d%d",&n,&q);
	for(i=1;i<=q;i++){
		scanf("%d",&op[i]);
		if(op[i]==1) scanf("%d%d",&l[i],&r[i]);
		else scanf("%d",&l[i]);
	}
	/*B=max(min(sqrt(q*2),q*1.0),1.0);
	ll ans=0;
	for(i=0;i<=(q-1)/B;i++){
		int fr=1+i*B,en=(i+1)*B;
		sh=0;
		for(j=fr;j<=en;j++)if(op[j]==1){
			set<node> f;f.insert((node){l[j],r[j],1});
			for(h=j+1;h<=en;h++) if(op[h]==2){
				auto p=f.LB((node){l[h],0,0});
				if(p==f.begin()) continue;
				p--;if(p->r<=l[h]) continue;
				auto q=*p;f.erase(p);
				f.insert((node){q.l,l[h],q.w*i2%mod});
				f.insert((node){l[h],q.r,q.w*i2%mod});
			}
			for(auto h:f) seg[++sh]=h;
		}
		fill(vis+1,vis+sh+1,0);
		Tree::clr();FHQ::Cl();for(j=1;j<=n;j++) R1[j]=R2[j]=0;f.clear();g.clear();
		for(j=1;j<=sh;j++) Tree::add(seg[j].l+1,seg[j].r-1,j);
		for(j=en+1;j<=q;j++)if(op[j]==2){
			auto p=f.LB((node){l[j],0,0});
			if(p!=f.begin()&&(--p)->r>l[j]){
				auto q=*p;f.erase(p);
				f.insert((node){q.l,l[j],q.w*i2%mod});
				f.insert((node){l[j],q.r,q.w*i2%mod});
			}
			if(!g.count(l[j])){
				auto p=g.LB(l[j]);
				if(p!=g.end()){
					FHQ::split(l[j]-1,R2[*p],R2[l[j]],R2[*p]);
					FHQ::Pg(R2[l[j]],i2);
					add(l[j],*p,FHQ::sum[R2[l[j]]]);
				}
				if(p!=g.begin()){
					p--;FHQ::split(l[j],R1[*p],R1[*p],R1[l[j]]);
					FHQ::Pg(R1[l[j]],i2);
					add(*p,l[j],FHQ::sum[R1[l[j]]]);
				}
				g.insert(l[j]);
			}
			Tree::modify(l[j]);
		}
		for(auto j:f) ans+=j.w*(j.r-j.l)%mod;
		for(j=1;j<=sh;j++) if(!vis[j]) ans+=(seg[j].r-seg[j].l)*seg[j].w%mod;
		// cerr<<ans%mod<<'\n';
		for(j=1;j<=n;j++) ans+=FHQ::qry(R1[j],j),ans+=FHQ::qry(R2[j],j);
	}*/
	ll ans=0;vector<node> tot=calc(1,q);for(auto i:tot) ans+=(i.r-i.l)*i.w%mod;
	printf("%lld\n",ans%mod);
}
int main(){
	int t=1;
	// scanf("%d",&t);
	while(t--) Solve();
	cerr<<clock()*1.0/CLOCKS_PER_SEC<<'\n';
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 10
Accepted

Test #1:

score: 10
Accepted
time: 0ms
memory: 19744kb

input:

500 500
1 119 258
2 134
2 417
2 176
2 61
2 60
2 110
1 335 336
1 96 111
2 202
1 138 344
2 358
2 134
1 29 54
1 73 381
1 179 495
2 490
2 418
2 186
2 183
1 168 340
2 78
1 15 27
2 373
1 245 498
1 372 495
2 244
2 63
1 174 490
2 282
2 417
1 272 408
1 109 134
2 303
2 345
1 238 401
1 36 480
1 21 483
2 10
1 3...

output:

855279801

result:

ok single line: '855279801'

Test #2:

score: 0
Accepted
time: 0ms
memory: 19040kb

input:

495 466
1 35 393
2 236
1 4 335
2 455
1 36 470
1 23 61
2 195
2 109
2 451
1 282 491
2 238
2 117
2 468
1 2 60
1 439 487
2 238
1 209 294
2 321
2 309
1 113 183
2 409
2 87
2 130
2 124
2 176
2 448
2 379
1 181 446
2 146
2 450
1 171 423
2 355
2 332
1 123 387
1 151 269
1 17 417
2 122
1 324 494
1 265 439
2 225...

output:

294468977

result:

ok single line: '294468977'

Test #3:

score: 0
Accepted
time: 0ms
memory: 16584kb

input:

441 467
2 180
1 51 344
2 180
1 16 345
1 39 419
1 64 432
2 176
1 35 372
2 426
1 8 415
1 1 439
1 17 430
2 433
1 89 369
1 83 353
2 292
1 1 421
1 63 430
1 33 345
1 69 421
1 49 373
1 77 343
1 24 393
1 90 375
1 8 425
2 322
2 61
2 112
2 209
1 39 406
1 12 426
1 29 430
1 50 374
1 47 394
1 9 387
2 234
1 19 35...

output:

526117259

result:

ok single line: '526117259'

Test #4:

score: 0
Accepted
time: 0ms
memory: 17608kb

input:

500 500
2 442
1 12 414
1 40 435
2 138
1 79 448
1 16 464
2 163
1 94 492
2 97
2 335
1 7 452
1 25 474
1 78 442
2 286
1 93 430
1 78 438
2 469
2 354
2 270
2 292
2 108
2 301
1 100 480
2 258
1 17 487
2 2
2 409
2 385
2 338
1 83 454
1 41 490
1 95 475
1 43 442
1 66 445
2 406
2 168
1 10 406
2 330
2 20
1 90 491...

output:

810270061

result:

ok single line: '810270061'

Test #5:

score: 0
Accepted
time: 0ms
memory: 14208kb

input:

500 500
1 29 407
1 89 480
1 31 497
1 28 494
1 21 492
1 91 465
1 13 467
1 89 425
1 22 444
1 20 430
1 48 445
1 33 441
1 61 435
1 69 427
1 89 485
1 90 446
1 23 488
1 6 424
1 76 425
1 36 460
1 16 421
1 20 500
1 3 487
1 99 481
1 53 412
1 96 456
1 39 436
1 28 436
1 4 409
1 9 486
1 22 484
1 88 413
1 26 467...

output:

419428992

result:

ok single line: '419428992'

Test #6:

score: 0
Accepted
time: 0ms
memory: 17188kb

input:

500 500
1 85 442
1 20 473
1 10 441
1 31 426
1 95 478
1 60 454
1 54 491
1 97 464
1 14 443
1 88 474
1 28 462
1 97 410
1 99 496
1 96 493
1 62 479
1 12 466
1 64 471
1 43 490
1 50 411
1 85 448
1 48 433
1 30 456
1 39 462
1 46 409
1 63 494
1 39 409
1 36 436
1 27 463
1 37 498
1 69 464
1 8 441
1 99 436
1 84 ...

output:

519347055

result:

ok single line: '519347055'

Subtask #2:

score: 20
Accepted

Dependency #1:

100%
Accepted

Test #7:

score: 20
Accepted
time: 32ms
memory: 16972kb

input:

5000 5000
2 2254
2 4832
2 208
1 335 3080
2 481
1 527 3659
1 2645 3803
1 855 3544
2 3824
2 347
1 1567 4426
1 2184 4493
2 142
2 2451
1 995 4170
2 576
2 999
2 2726
1 278 3540
2 3218
1 922 3302
2 3253
2 4161
2 4505
1 4201 4534
1 1827 3540
2 3241
2 1909
2 2667
1 723 2453
2 3123
1 1017 4791
1 2953 3384
1 ...

output:

275175220

result:

ok single line: '275175220'

Test #8:

score: 0
Accepted
time: 31ms
memory: 17228kb

input:

4753 4704
1 589 2183
1 922 2210
2 2885
2 171
2 1597
2 3601
1 1906 4730
1 411 3615
2 1665
1 87 801
2 3525
2 2426
2 2723
1 323 4345
2 3950
2 460
2 4165
1 1156 2642
1 1490 3965
1 329 4081
1 1206 2077
2 4216
1 996 2254
2 2219
2 1035
2 4074
2 714
1 952 2726
2 3097
2 409
1 3320 4713
2 4061
1 1765 2040
1 2...

output:

840227126

result:

ok single line: '840227126'

Test #9:

score: 0
Accepted
time: 30ms
memory: 17856kb

input:

4141 4610
2 3761
2 2872
1 334 3247
1 273 3914
1 307 3651
1 607 4105
1 458 3269
1 270 3782
2 311
1 533 3332
2 2495
1 991 3573
1 376 3593
1 239 3682
1 259 3350
1 213 3380
2 1904
1 591 3512
1 845 3785
1 189 3335
1 817 3362
1 335 3288
2 3633
1 747 3586
2 4062
2 3812
1 487 3333
1 740 4002
1 847 3937
1 53...

output:

597472157

result:

ok single line: '597472157'

Test #10:

score: 0
Accepted
time: 31ms
memory: 19936kb

input:

5000 5000
2 2864
1 473 4676
2 858
2 2672
2 4473
2 800
2 3259
2 470
2 3859
2 2228
1 491 4536
1 700 4378
2 498
1 769 4837
1 80 4861
1 109 4201
1 908 4094
1 9 4706
2 1017
2 737
2 4155
1 270 4290
2 4434
2 1867
1 148 4119
1 299 4194
2 4076
2 1863
2 1570
2 4855
1 1000 4834
1 637 4827
2 1961
2 4518
1 811 4...

output:

251906928

result:

ok single line: '251906928'

Test #11:

score: 0
Accepted
time: 31ms
memory: 16532kb

input:

5000 5000
1 327 4388
1 768 4973
1 438 4243
1 288 4244
1 105 4460
1 862 4894
1 125 4611
1 934 4115
1 631 4349
1 635 4088
1 250 4629
1 873 4204
1 977 4296
1 391 4821
1 107 4589
1 86 4810
1 615 4072
1 221 4113
1 745 4771
1 806 4983
1 675 4334
1 709 4428
1 587 4180
1 494 4949
1 904 4253
1 901 4527
1 717...

output:

845230417

result:

ok single line: '845230417'

Test #12:

score: 0
Accepted
time: 30ms
memory: 18968kb

input:

5000 5000
1 902 4097
1 263 4218
1 502 4305
1 798 4433
1 392 4689
1 479 4006
1 518 4269
1 764 4295
1 48 4834
1 966 4574
1 374 4970
1 950 4925
1 54 4860
1 987 4144
1 448 4504
1 329 4838
1 734 4807
1 403 4387
1 275 4396
1 731 4769
1 206 4348
1 282 4258
1 676 4956
1 274 4943
1 892 4146
1 337 4962
1 798 ...

output:

678724707

result:

ok single line: '678724707'

Subtask #3:

score: 40
Accepted

Test #13:

score: 40
Accepted
time: 466ms
memory: 28004kb

input:

50000 50000
1 24367 33007
1 14396 42256
1 6375 22327
1 7892 42501
1 10100 37998
1 6284 48524
1 7357 18164
1 16200 46424
1 18972 34131
1 16849 32591
1 1917 3018
1 19897 30272
1 45044 45753
1 18999 25448
1 5167 31033
1 6182 35335
1 7270 37270
1 12651 39965
1 28896 38022
1 13853 35426
1 35516 48244
1 1...

output:

733099543

result:

ok single line: '733099543'

Test #14:

score: 0
Accepted
time: 397ms
memory: 25608kb

input:

49951 43686
1 21796 23464
1 29304 46959
1 5034 41719
1 7779 35334
1 27566 36486
1 20347 26165
1 12508 30387
1 18363 20335
1 8540 21417
1 5728 49086
1 46038 47603
1 10371 15910
1 27293 43572
1 18915 45279
1 7388 48342
1 6802 43746
1 4361 40049
1 41177 43375
1 23287 48354
1 37097 41733
1 2406 11638
1 ...

output:

792296531

result:

ok single line: '792296531'

Test #15:

score: 0
Accepted
time: 305ms
memory: 27968kb

input:

49914 43874
1 8935 40963
1 4425 44317
1 1769 45855
1 2436 40257
1 1778 47216
1 383 42149
1 5398 40732
1 1079 43346
1 6578 41660
1 9689 45985
1 6131 42681
1 8862 47431
1 3979 46189
1 6456 43485
1 2028 46574
1 3802 47787
1 6990 41659
1 9221 41204
1 2271 43554
1 8018 45280
1 9344 43917
1 6623 41152
1 7...

output:

831211412

result:

ok single line: '831211412'

Test #16:

score: 0
Accepted
time: 456ms
memory: 27112kb

input:

50000 50000
1 1310 49344
1 5755 44255
1 3582 41465
1 6800 42160
1 1651 44584
1 7967 44410
1 3116 48795
1 1855 41120
1 27 42294
1 2455 49629
1 4196 42487
1 7070 44542
1 136 42053
1 5715 44222
1 8794 43115
1 4048 45579
1 635 46703
1 9246 41055
1 3678 41276
1 4871 41715
1 1659 44679
1 1639 46392
1 2479...

output:

316801136

result:

ok single line: '316801136'

Test #17:

score: 0
Accepted
time: 531ms
memory: 25860kb

input:

50000 50000
1 8731 40028
1 6575 43815
1 9558 42476
1 7269 47567
1 6597 45567
1 7753 49129
1 9892 47319
1 9438 45710
1 8688 46209
1 75 43653
1 8918 44467
1 2751 43343
1 4433 45172
1 8062 40732
1 3342 41158
1 615 45475
1 7497 44843
1 9201 48262
1 3063 44796
1 9294 48709
1 382 46129
1 5935 48889
1 1195...

output:

680677335

result:

ok single line: '680677335'

Test #18:

score: 0
Accepted
time: 544ms
memory: 28040kb

input:

50000 50000
1 5934 20406
1 21982 32375
1 7064 32616
1 28419 47337
1 28379 31201
1 40915 47773
1 14903 35558
1 2825 43481
1 28451 29178
1 4872 24238
1 5487 6527
1 33950 35231
1 6301 27246
1 3825 16238
1 3823 46254
1 10988 36002
1 6447 8234
1 4758 20500
1 4816 33750
1 3332 3743
1 723 25813
1 6797 4955...

output:

211908161

result:

ok single line: '211908161'

Subtask #4:

score: 30
Accepted

Dependency #1:

100%
Accepted

Dependency #2:

100%
Accepted

Dependency #3:

100%
Accepted

Test #19:

score: 30
Accepted
time: 528ms
memory: 29968kb

input:

50000 50000
1 23820 35205
1 23204 28152
1 10968 38077
2 26347
1 34065 43744
2 6956
1 12386 31941
1 5586 8700
1 37329 37421
1 13872 49853
1 10054 40143
2 9721
1 3312 36213
1 11745 48452
2 27741
2 37848
2 2566
2 9714
1 38322 48081
2 25675
1 28940 35759
2 11908
1 21501 22242
1 22858 23827
1 13837 25563...

output:

963178931

result:

ok single line: '963178931'

Test #20:

score: 0
Accepted
time: 522ms
memory: 28036kb

input:

49844 49196
1 14456 32911
1 25807 25848
1 36273 38462
2 906
2 11834
2 1552
2 24305
1 25916 28701
2 15959
2 36578
1 4325 48457
1 25678 44301
2 9794
1 11656 20160
2 22873
2 44228
1 29465 40920
2 24618
2 5092
2 47096
1 8617 18389
1 35678 41207
1 12614 16730
2 23299
2 240
1 1980 46841
2 39602
1 2700 217...

output:

720301477

result:

ok single line: '720301477'

Test #21:

score: 0
Accepted
time: 433ms
memory: 28268kb

input:

40208 47419
1 3878 39147
2 40063
1 5302 30782
1 5676 36573
1 3071 31029
2 37839
1 19 34805
1 8302 36156
2 3219
1 3855 38334
2 28443
2 32961
1 7085 30246
2 26657
1 1197 39431
1 6522 37149
2 2160
1 7638 34260
1 7938 36825
2 31484
2 15343
1 4546 34945
1 8836 39829
2 14331
1 8469 34573
2 38079
1 2851 36...

output:

479455278

result:

ok single line: '479455278'

Test #22:

score: 0
Accepted
time: 527ms
memory: 26980kb

input:

50000 50000
2 13550
2 36223
2 43206
1 5510 47597
2 6104
2 25632
1 9207 49739
1 8081 48987
1 5850 49093
1 5202 40432
2 44451
1 4973 41354
2 47071
2 37601
1 22 47601
1 2915 47643
2 9535
2 30503
2 37084
1 9914 43003
2 36565
1 6144 45818
1 8675 48820
1 406 45803
2 21625
2 18503
2 34530
1 7996 46583
1 66...

output:

749830221

result:

ok single line: '749830221'

Test #23:

score: 0
Accepted
time: 590ms
memory: 27008kb

input:

50000 50000
2 13683
2 21410
2 44457
2 43166
2 12830
1 17939 27321
2 36727
1 27602 40953
2 18534
2 15927
2 38517
2 49434
2 41945
2 43511
2 2024
2 23862
2 24358
2 20120
2 28683
2 7467
2 35825
2 1214
2 46879
2 20156
2 6592
2 32224
2 181
1 27585 35166
2 6322
2 21685
2 46456
2 32309
2 10167
1 4022 29619
...

output:

407055283

result:

ok single line: '407055283'

Test #24:

score: 0
Accepted
time: 488ms
memory: 28528kb

input:

50000 50000
1 3717 40186
1 9852 44874
1 3429 45225
1 6774 49357
1 2761 49086
1 4497 41804
1 6653 45983
1 8605 45746
1 3439 45258
1 4871 45925
1 8952 49447
1 4846 42095
1 4949 48806
1 5032 49881
1 9094 47754
1 6003 43829
1 1665 41735
1 2596 49349
1 4544 42951
1 8987 47280
1 4031 42116
1 9586 48466
1 ...

output:

257719259

result:

ok single line: '257719259'