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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#396220 | #244. Turn Off The Light | czc | 0 | 212ms | 24432kb | C++14 | 1.1kb | 2024-04-22 15:25:03 | 2024-04-22 15:25:05 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll mod=1e9+7;
const int maxn=1e6+5;
int ans[maxn],f[maxn][2],g[maxn],a[maxn],n;
char s[maxn];
inline void calc(){
int l=n+1,r=0;
for(int i=1;i<=n;i++) if(a[i]) l=min(l,i),r=max(r,i);
if(l>r){for(int i=1;i<=n;i++) ans[i]=0; return ;}
f[r][0]=0,f[r][1]=3;
f[r-1][0]=1,f[r-1][1]=2;
for(int i=r-2;i>=1;i--){
f[i][0]=f[i+1][a[i+1]^1]+1;
f[i][1]=f[i+1][a[i+1]]+3;
}
int p=0,w=0;
for(int i=1;i<=r;i++){
if(i<l) ans[i]=f[i][a[i]];
else p^=a[i],ans[i]=f[i][p]+w,w+=2+(p?0:2);
}
for(int i=r+1;i<=n;i++) ans[i]=1919810;
}
inline void solve(){
scanf("%d",&n);
scanf("%s",s+1);
for(int i=1;i<=n;i++) a[i]=s[i]-'0';
calc();
for(int i=1;i<=n;i++) g[i]=ans[i];
reverse(a+1,a+n+1);
calc();
reverse(ans+1,ans+n+1);
ll ret=0;
for(int i=1;i<=n;i++){
g[i]=min(g[i],ans[i]);
ret=(ret+(ll)i*g[i])%mod;
}
printf("%lld\n",ret);
}
int main(){
int T; scanf("%d",&T);
while(T--) solve();
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 212ms
memory: 24432kb
input:
146645 2 00 2 10 2 01 2 11 3 000 3 100 3 010 3 110 3 001 3 101 3 011 3 111 4 0000 4 1000 4 0100 4 1100 4 0010 4 1010 4 0110 4 1110 4 0001 4 1001 4 0101 4 1101 4 0011 4 1011 4 0111 4 1111 5 00000 5 10000 5 01000 5 11000 5 00100 5 10100 5 01100 5 11100 5 00010 5 10010 5 01010 5 11010 5 00110 5 10110 5...
output:
0 5 7 6 0 14 10 12 14 24 12 26 0 34 22 36 18 40 20 38 26 60 40 58 24 62 42 60 0 69 47 66 33 80 50 83 31 90 60 93 34 87 57 80 45 120 90 123 64 117 87 110 42 123 93 120 67 118 88 129 0 123 89 126 63 128 86 125 49 150 108 147 70 153 111 152 51 168 126 165 88 171 129 170 54 165 123 168 85 154 112 159 73...
result:
wrong answer 146643rd lines differ - expected: '153920011', found: '551438642'