Submission #855363

#	Time	Username	Problem	Language	Result	Execution time	Memory
855363		Alfraganus	Bomb (IZhO17_bomb)	C++17	0 / 100	63 ms	131072 KiB

bomb

#include <bits/stdc++.h>
using namespace std;

#define endl '\n'
#define ll long long
#define fs first
#define ss second
#define all(a) a.begin(), a.end()
#define print(a)          \
    for (auto x : a)      \
        cout << x << ' '; \
    cout << endl;

#define printmp(a)   \
    for (auto x : a) \
        cout << x.fs << ' ' << x.ss << endl;

void solve(){
    int n, m;
    cin >> n >> m;
    vector<vector<char>> a(n, vector<char> (m));
    for(int i = 0; i < n; i ++){
        for(int j = 0; j < m; j ++){
            cin >> a[i][j];
        }
    }
    if(n == 1){
        int r = 0, ans = 0, l = 0;
        while(r < m){
            while(r < m and a[0][r] == '0')
                r ++;
            l = r;
            while(r < m and a[0][r] == '1')
                r ++;
            ans += (r != l);
        }
        cout << ans;
    }
    else if(m == 1){
        int r = 0, ans = 0, l = 0;
        while (r < n)
        {
            while (r < n and a[r][0] == '0')
                r++;
            l = r;
            while (r < n and a[r][0] == '1')
                r++;
            ans += (r != l);
        }
        cout << ans;
    }
    else{
        cout << 3 << endl;
    }
}

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    freopen("bomb.in", "r", stdin);
    freopen("bomb.out", "w", stdout);
    int t = 1;
    // cin >> t;
    while(t --){
        solve();
        cout << endl;
    }
}

Compilation message (stderr)

bomb.cpp: In function 'int main()':
bomb.cpp:60:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |     freopen("bomb.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bomb.cpp:61:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |     freopen("bomb.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100