Submission #1869440
Source Code Expand
#include <iostream> #include <algorithm> #include<cmath> #include<cstring> #include<cstdio> #include<cstdlib> #include<vector> #include<iomanip> #define sqr(x) (x)*(x) using namespace std; long long n,m,i,j,dp[3005][3005],l[3005],r[3005],mod=1000000007,cnt[3005],x,y; string st; int main() { cin>>n>>m>>st; st=" "+st; for (i=1;i<=n;i++) { cnt[i]=cnt[i-1]+st[i]-'0'; } for (i=1;i<=n;i++) { l[i]=i; r[i]=i; } for (i=1;i<=m;i++) { cin>>x>>y; r[x]=max(r[x],y); } for (i=1;i<=n;i++) { r[i]=max(r[i],r[i-1]); } dp[0][0]=1; for (i=1;i<=n;i++) { for (j=0;j<=r[i];j++) { if (j>cnt[r[i]]) break; if (j>=cnt[r[i]]-r[i]+i) { dp[i][j]=dp[i-1][j]+dp[i-1][j-1]; dp[i][j]%=mod; } } } cout<<dp[n][cnt[n]]; return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Shuffling |
User | csy2005 |
Language | C++14 (GCC 5.4.1) |
Score | 900 |
Code Size | 808 Byte |
Status | AC |
Exec Time | 22 ms |
Memory | 68352 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 900 / 900 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | subtask0_0.txt, subtask0_1.txt, subtask0_2.txt |
All | subtask0_0.txt, subtask0_1.txt, subtask0_2.txt, subtask1_0.txt, subtask1_1.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_2.txt, subtask1_20.txt, subtask1_21.txt, subtask1_22.txt, subtask1_23.txt, subtask1_3.txt, subtask1_4.txt, subtask1_5.txt, subtask1_6.txt, subtask1_7.txt, subtask1_8.txt, subtask1_9.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
subtask0_0.txt | AC | 1 ms | 256 KB |
subtask0_1.txt | AC | 1 ms | 256 KB |
subtask0_2.txt | AC | 1 ms | 256 KB |
subtask1_0.txt | AC | 21 ms | 68352 KB |
subtask1_1.txt | AC | 22 ms | 68352 KB |
subtask1_10.txt | AC | 22 ms | 68352 KB |
subtask1_11.txt | AC | 22 ms | 68352 KB |
subtask1_12.txt | AC | 21 ms | 68352 KB |
subtask1_13.txt | AC | 21 ms | 68352 KB |
subtask1_14.txt | AC | 21 ms | 68352 KB |
subtask1_15.txt | AC | 22 ms | 68352 KB |
subtask1_16.txt | AC | 21 ms | 68352 KB |
subtask1_17.txt | AC | 22 ms | 68352 KB |
subtask1_18.txt | AC | 21 ms | 68352 KB |
subtask1_19.txt | AC | 22 ms | 68352 KB |
subtask1_2.txt | AC | 22 ms | 68352 KB |
subtask1_20.txt | AC | 22 ms | 68352 KB |
subtask1_21.txt | AC | 21 ms | 68352 KB |
subtask1_22.txt | AC | 22 ms | 68352 KB |
subtask1_23.txt | AC | 22 ms | 68352 KB |
subtask1_3.txt | AC | 21 ms | 68352 KB |
subtask1_4.txt | AC | 22 ms | 68352 KB |
subtask1_5.txt | AC | 22 ms | 68352 KB |
subtask1_6.txt | AC | 21 ms | 68352 KB |
subtask1_7.txt | AC | 21 ms | 68352 KB |
subtask1_8.txt | AC | 21 ms | 68352 KB |
subtask1_9.txt | AC | 21 ms | 68352 KB |