Submission #646437

#	Time	Username	Problem	Language	Result	Execution time	Memory
646437		murad_2005	Red-blue table (IZhO19_stones)	C++14	27 / 100	34 ms	1304 KiB

stones

#include<bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2")
#pragma GCC optimize("unroll-loops")
#define ll long long
#define ld long double
#define ull unsigned long long
#define ui unsigned int
#define eb emplace_back
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define pb push_back
#define pf push_front
#define pii pair<int, int>
#define pil pair<int, ll>
#define plli pair<long long, int>
#define pdi pair<double, int>
#define pldldi pair<ld, pair<ld, int>>
#define pdd pair<double, double>
#define pid pair<int, double>
#define piii pair<int, pair<int, int>>
#define pllll pair<long long, long long>
#define pllllll pair<ll, pllll>
#define INF 2e9 + 5
#define size(v) v.size()
#define f first
#define s second
#define Pi 3.14159265359

using namespace std;

int Choice1(int n, int m){
    int x = 0, best;
    while(x <= n){
        if(n - x > x){
            best = x;
            x++;
        }else{
            break;
        }
    }
    return m + best;
}

int Choice2(int n, int m){
    int x = 0, best;
    while(x <= m){
        if(m - x > x){
            best = x;
            x++;
        }else{
            break;
        }
    }
    return n + best;
}


void solve(){
    int n, m;
    cin >> n >> m;
    if(Choice1(n, m) > Choice2(n, m)){ // m > 2 * x
        cout << Choice1(n, m) << "\n";
        int x = Choice1(n, m) - m;
        vector<vector<char>>grid(n + 1, vector<char>(m + 1, '-'));
        for(int i = 1; i <= x; i++){
            for(int j = 1; j <= m; j++){
                grid[i][j] = '+';
            }
        }
        for(int i = 1; i <= n; i++){
            for(int j = 1; j <= m; j++){
                cout << grid[i][j];
            }
            cout << "\n";
        }
    }else{// n > 2 * x
        cout << Choice2(n, m) << "\n";
        int x = Choice2(n, m) - n;
        vector<vector<char>>grid(n + 1, vector<char>(m + 1, '+'));
        for(int i = 1; i <= x; i++){
            for(int j = 1; j <= n; j++){
                grid[j][i] = '-';
            }
        }
        for(int i = 1; i <= n; i++){
            for(int j = 1; j <= m; j++){
                cout << grid[i][j];
            }
            cout << "\n";
        }
    }
}

int main(){
    int t;
    // t = 1;
    cin >> t;
    while(t--){
        solve();
    }
    return 0;
}

Compilation message (stderr)

stones.cpp: In function 'int Choice1(int, int)':
stones.cpp:42:16: warning: 'best' may be used uninitialized in this function [-Wmaybe-uninitialized]
   42 |     return m + best;
      |                ^~~~
stones.cpp: In function 'int Choice2(int, int)':
stones.cpp:55:16: warning: 'best' may be used uninitialized in this function [-Wmaybe-uninitialized]
   55 |     return n + best;
      |                ^~~~
stones.cpp: In function 'void solve()':
stones.cpp:55:16: warning: 'best' may be used uninitialized in this function [-Wmaybe-uninitialized]
   55 |     return n + best;
      |                ^~~~
stones.cpp:46:16: note: 'best' was declared here
   46 |     int x = 0, best;
      |                ^~~~
stones.cpp:81:26: warning: 'best' may be used uninitialized in this function [-Wmaybe-uninitialized]
   81 |         for(int i = 1; i <= x; i++){
      |                        ~~^~~~
stones.cpp:55:16: warning: 'best' may be used uninitialized in this function [-Wmaybe-uninitialized]
   55 |     return n + best;
      |                ^~~~
stones.cpp:46:16: note: 'best' was declared here
   46 |     int x = 0, best;
      |                ^~~~

• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 0 / 16
• Subtask 4: 0 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 31