Submission #1617339


Source Code Expand

#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
//---------------------------------------------------------------------------------------------------
/*---------------------------------------------------------------------------------------------------
            ∧_∧  
      ∧_∧  (´<_` )  Welcome to My Coding Space!
     ( ´_ゝ`) /  ⌒i     
    /   \     | |     
    /   / ̄ ̄ ̄ ̄/  |  
  __(__ニつ/     _/ .| .|____  
     \/____/ (u ⊃  
---------------------------------------------------------------------------------------------------*/



int H, W;
string A[101];
#define NO "No"
#define YES "Yes"
//--------------------------------------------------------------------------------------------------
string solve() {
    map<char, int> cnt;
    rep(y, 0, H) rep(x, 0, W) cnt[A[y][x]]++;

    if (H % 2 == 0 && W % 2 == 0) {
        fore(p, cnt) if (p.second % 4) return NO;
        return YES;
    }

    if (H % 2 && W % 2) {
        map<int, int> c;
        fore(p, cnt) c[p.second % 4]++;
        if (c[3]) return NO;
        if (c[1] != 1) return NO;
        if (c[2] > (H - 1) / 2 + (W - 1) / 2) return NO;
        return YES;
    }

    if (W % 2) swap(H, W);

    map<int, int> c;
    fore(p, cnt) c[p.second % 4]++;
    if (c[1] || c[3]) return NO;
    if (c[2] > W / 2) return NO;
    return YES;
}
//--------------------------------------------------------------------------------------------------
void _main() {
    cin >> H >> W;
    rep(y, 0, H) cin >> A[y];
    cout << solve() << endl;
}

Submission Info

Submission Time
Task C - Palindromic Matrix
User hamayanhamayan
Language C++14 (GCC 5.4.1)
Score 400
Code Size 1946 Byte
Status AC
Exec Time 2 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 5
AC × 32
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 0_04.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 0_04.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt
Case Name Status Exec Time Memory
0_00.txt AC 1 ms 256 KB
0_01.txt AC 1 ms 256 KB
0_02.txt AC 1 ms 256 KB
0_03.txt AC 1 ms 256 KB
0_04.txt AC 1 ms 256 KB
1_00.txt AC 1 ms 256 KB
1_01.txt AC 1 ms 256 KB
1_02.txt AC 1 ms 256 KB
1_03.txt AC 1 ms 256 KB
1_04.txt AC 1 ms 256 KB
1_05.txt AC 1 ms 256 KB
1_06.txt AC 1 ms 256 KB
1_07.txt AC 1 ms 256 KB
1_08.txt AC 1 ms 256 KB
1_09.txt AC 1 ms 256 KB
1_10.txt AC 1 ms 256 KB
1_11.txt AC 1 ms 256 KB
1_12.txt AC 1 ms 256 KB
1_13.txt AC 1 ms 256 KB
1_14.txt AC 2 ms 256 KB
1_15.txt AC 1 ms 256 KB
1_16.txt AC 1 ms 256 KB
1_17.txt AC 1 ms 256 KB
1_18.txt AC 1 ms 256 KB
1_19.txt AC 1 ms 256 KB
1_20.txt AC 1 ms 256 KB
1_21.txt AC 1 ms 256 KB
1_22.txt AC 1 ms 256 KB
1_23.txt AC 1 ms 256 KB
1_24.txt AC 1 ms 256 KB
1_25.txt AC 1 ms 256 KB
1_26.txt AC 1 ms 256 KB