Submission #933692

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
933692	2024-02-26 05:40:26	guagua0407	Palindromes (APIO14_palindrome)	C++17	100 / 100	179 ms	38560 KiB

palindrome

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#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
const int p=29;
const int mod=1e9+7;
const int mxn=3e5+5;
int powv[mxn];
int hashr[mxn],hashl[mxn];
map<int,int> mp[mxn];
void build(string str){
    int n=str.length();
    powv[0]=1;
    for(int i=1;i<=n;i++){
        powv[i]=1ll*powv[i-1]*p%mod;
 
 
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Compilation message (stderr)

palindrome.cpp: In function 'void setIO(std::string)':
palindrome.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
palindrome.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 24 / 24
• Subtask 4: 26 / 26
• Subtask 5: 27 / 27