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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#89907 | #5110. Splitstream | _skb_# | RE | 2ms | 3400kb | C++20 | 2.5kb | 2023-03-21 19:17:56 | 2023-03-21 19:17:59 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
vector<int> inp;
vector<vector<int>> rec;
vector<ll> sz;
void f(int x, int v){
sz[x]=v;
if(inp[x]==-1) return;
int v1=rec[inp[x]][0],v2=rec[inp[x]][1];
if(sz[v1]==-1||sz[v2]==-1) return;
if(v2) f(rec[inp[x]][2],sz[v1]+sz[v2]);
else{
f(rec[inp[x]][2],(sz[v1]+1)/2);
f(rec[inp[x]][3],sz[v1]/2);
}
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
ll n,q,m;
cin>>m>>n>>q;
vector<pair<int,int>> par(10*n+1,{-1,-1});
inp.assign(10*n+1,-1);
rec.assign(n+1,{});
sz.assign(10*m+1,-1);
for(int i=0;i<n;i++){
char p;
int x,y,z;
cin>>p>>x>>y>>z;
if(p=='S'){
par[y]={x,-1};
par[z]={-1,x};
inp[x]=i;
rec[i]={x,0,y,z};
}
else {
par[z]={x,y};
inp[x]=inp[y]=i;
rec[i]={x,y,z,0};
}
}
sz[0]=0;
f(1,m);
for (int i = 2; i < 10 * n; ++i) if (sz[i] == -1) {
f(i, 0);
}
while(q--){
ll u,k;
cin>>u>>k;
int f=1;
while(u!=1){
int x=par[u].first;
int y=par[u].second;
if(k>sz[u]){
f=0;
break;
}
if(x==-1){
u=y;
k=2LL*k;
}
else if(y==-1){
u=x;
k=2LL*k-1LL;
}
else{
ll a=sz[x];
ll b=sz[y];
if(k>a+b){
f=0;
break;
}
if(a>=b){
if(k<=2LL*b){
if(k%2) u=x;
else u=y;
k=(k+1LL)/2;
}
else{
u=x;
k=k-b;
}
}
else{
if(k<=2LL*a){
if(k%2) u=x;
else u=y;
k=(k+1LL)/2;
}
else{
u=y;
k=k-a;
}
}
}
}
if(k>m) f=0;
if(!f) cout<<"none\n";
else cout<<k<<"\n";
}
}
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 3400kb
input:
5 8 26 M 8 9 13 S 2 4 5 S 1 2 3 M 6 5 8 S 4 9 10 S 10 14 15 S 3 6 7 S 7 11 12 2 3 2 4 3 2 3 3 4 2 4 3 5 1 5 2 6 1 6 2 7 1 7 2 8 2 8 3 9 1 9 2 10 1 10 2 11 1 11 2 12 1 13 3 13 4 14 1 14 2 15 1
output:
5 none 4 none 5 none 3 none 2 none 4 none 3 none 1 none 5 none 4 none none 3 none 5 none none
result:
ok 26 lines
Test #2:
score: -100
Dangerous Syscalls
input:
1000000000 8191 1000 S 1 2 3 S 2 4 5 S 3 6 7 S 4 8 9 S 5 10 11 S 6 12 13 S 7 14 15 S 8 16 17 S 9 18 19 S 10 20 21 S 11 22 23 S 12 24 25 S 13 26 27 S 14 28 29 S 15 30 31 S 16 32 33 S 17 34 35 S 18 36 37 S 19 38 39 S 20 40 41 S 21 42 43 S 22 44 45 S 23 46 47 S 24 48 49 S 25 50 51 S 26 52 53 S 27 54 55...