Submission #257759

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
257759	2020-08-04 17:46:09	updown1	Mate (COCI18_mate)	C++14	80 / 100	2090 ms	28432 KiB

mate

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/*
Code by @marlov
*/
#include <bits/stdc++.h>
using namespace std;
#define maxV 2005
#define MOD 1000000007
string s;
int Q;
long long pc[maxV][maxV];
long long dp[maxV][26];
int main() {
  ios_base::sync_with_stdio(0); cin.tie(0);
  cin>>s;
  cin>>Q;
  //precomute pc[n][m] which is the nCm
  for(int i=0;i<maxV;i++){
    pc[i][0]=1;
    for(int j=1;j<i;j++){
      pc[i][j]=pc[i-1][j]+pc[i-1][j-1];
      pc[i][j]%=MOD;
    }
    pc[i][i]=1;
  }
  for(int i=0;i<26;i++){
    for(int j=s.length()-1;j>=0;j--){
      if(s[j]=='a'+i){
 
 
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Compilation message (stderr)

mate.cpp: In function 'int main()':
mate.cpp:33:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(j<s.length()-1){
       ~^~~~~~~~~~~~~
mate.cpp:43:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=tl-2;j<s.length()-1;j++){
                  ~^~~~~~~~~~~~~

• Subtask 1: 80 / 100