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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#645915 | #7046. Function! | SGColin | AC ✓ | 11ms | 1648kb | C++17 | 1.1kb | 2024-10-16 20:27:32 | 2024-10-16 20:27:32 |
Judging History
answer
#include<cstdio>
#include<algorithm>
using namespace std;
typedef long long LL;typedef long double DB;
const int MOD=998244353,INV2=(MOD+1)/2,INV6=(MOD+1)/6;
int S,ans;LL n;
#define ADD(x,y) (((x)+(y))%MOD)
#define MUL(x,y) ((LL)(x)*(y)%MOD)
int S1(LL n) {return MUL(MUL(n%MOD,(n+1)%MOD),INV2);}
int S2(LL n) {return MUL(MUL(MUL(n%MOD,(n+1)%MOD),ADD((n<<1)%MOD,1)),INV6);}
int S3(LL n) {int s=S1(n);return MUL(s,s);}
DB pow(DB w,int b) {DB s;for (s=1;b;b>>=1,w=w*w) if (b&1) s=s*w;return s;}
int Pow(int w,int b) {int s;for (s=1;b;b>>=1,w=MUL(w,w)) if (b&1) s=MUL(s,w);return s;}
int main(){
scanf("%lld",&n);
for (S=1;(LL)S*S-1<=n;S++);S--;
if (S>1){
ans=ADD(S3(S),MOD-S3(1));
ans=ADD(ans,MOD-ADD(S2(S),MOD-S2(1)));
}
ans=ADD(ans,MUL((n+1)%MOD,ADD(S1(n),MOD-S1(S))));
ans=ADD(ans,MOD-ADD(S2(n),MOD-S2(S)));
for (int i=2;(1LL<<i)<=n;i++){
int now=0;
for (int a=2;pow(a,i)<=n;a++){
LL L=pow(a,i),R=min(pow(a,i+1)-1,(DB)n);
now=ADD(now,MUL(a,(R-L+1)%MOD));
}
ans=ADD(ans,MUL(now,i));
}
printf("%d\n",ans);
return 0;
}
这程序好像有点Bug,我给组数据试试?
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 1636kb
input:
2
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 0
Accepted
time: 0ms
memory: 1636kb
input:
10
output:
236
result:
ok 1 number(s): "236"
Test #3:
score: 0
Accepted
time: 0ms
memory: 1592kb
input:
20
output:
1646
result:
ok 1 number(s): "1646"
Test #4:
score: 0
Accepted
time: 0ms
memory: 1604kb
input:
27
output:
3862
result:
ok 1 number(s): "3862"
Test #5:
score: 0
Accepted
time: 0ms
memory: 1576kb
input:
37
output:
9571
result:
ok 1 number(s): "9571"
Test #6:
score: 0
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time: 0ms
memory: 1596kb
input:
100
output:
175028
result:
ok 1 number(s): "175028"
Test #7:
score: 0
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time: 0ms
memory: 1608kb
input:
123
output:
322744
result:
ok 1 number(s): "322744"
Test #8:
score: 0
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time: 0ms
memory: 1632kb
input:
2548
output:
765669726
result:
ok 1 number(s): "765669726"
Test #9:
score: 0
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time: 0ms
memory: 1572kb
input:
12448
output:
159637196
result:
ok 1 number(s): "159637196"
Test #10:
score: 0
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time: 0ms
memory: 1648kb
input:
65535
output:
120089112
result:
ok 1 number(s): "120089112"
Test #11:
score: 0
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time: 0ms
memory: 1612kb
input:
102458
output:
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result:
ok 1 number(s): "475774506"
Test #12:
score: 0
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time: 0ms
memory: 1600kb
input:
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output:
64337543
result:
ok 1 number(s): "64337543"
Test #13:
score: 0
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time: 0ms
memory: 1644kb
input:
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output:
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result:
ok 1 number(s): "312492357"
Test #14:
score: 0
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time: 0ms
memory: 1536kb
input:
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output:
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result:
ok 1 number(s): "35530508"
Test #15:
score: 0
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time: 0ms
memory: 1536kb
input:
1025481
output:
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result:
ok 1 number(s): "921523794"
Test #16:
score: 0
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time: 0ms
memory: 1528kb
input:
9999999
output:
732610409
result:
ok 1 number(s): "732610409"
Test #17:
score: 0
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time: 0ms
memory: 1612kb
input:
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output:
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result:
ok 1 number(s): "825346623"
Test #18:
score: 0
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time: 0ms
memory: 1648kb
input:
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output:
30938162
result:
ok 1 number(s): "30938162"
Test #19:
score: 0
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time: 0ms
memory: 1536kb
input:
2658478
output:
780038100
result:
ok 1 number(s): "780038100"
Test #20:
score: 0
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time: 0ms
memory: 1548kb
input:
10000000
output:
679483439
result:
ok 1 number(s): "679483439"
Test #21:
score: 0
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time: 0ms
memory: 1576kb
input:
100000000
output:
498142384
result:
ok 1 number(s): "498142384"
Test #22:
score: 0
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time: 0ms
memory: 1536kb
input:
1000000000
output:
69187994
result:
ok 1 number(s): "69187994"
Test #23:
score: 0
Accepted
time: 1ms
memory: 1540kb
input:
10000000000
output:
23566211
result:
ok 1 number(s): "23566211"
Test #24:
score: 0
Accepted
time: 3ms
memory: 1612kb
input:
100000000000
output:
247411531
result:
ok 1 number(s): "247411531"
Test #25:
score: 0
Accepted
time: 11ms
memory: 1588kb
input:
1000000000000
output:
434484365
result:
ok 1 number(s): "434484365"
Test #26:
score: 0
Accepted
time: 7ms
memory: 1644kb
input:
487456215487
output:
219915839
result:
ok 1 number(s): "219915839"
Test #27:
score: 0
Accepted
time: 4ms
memory: 1572kb
input:
123456654321
output:
873090152
result:
ok 1 number(s): "873090152"
Test #28:
score: 0
Accepted
time: 10ms
memory: 1528kb
input:
485623875512
output:
905855726
result:
ok 1 number(s): "905855726"
Test #29:
score: 0
Accepted
time: 8ms
memory: 1528kb
input:
598745632254
output:
548362077
result:
ok 1 number(s): "548362077"
Test #30:
score: 0
Accepted
time: 7ms
memory: 1612kb
input:
451518115487
output:
856104478
result:
ok 1 number(s): "856104478"