Submission #877334

#	Time	Username	Problem	Language	Result	Execution time	Memory
877334		marcid	Bomb (IZhO17_bomb)	C++17	8 / 100	276 ms	6760 KiB

bomb

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int maxn = 2501;
char field[maxn][maxn];
int mn1=maxn,mn2=maxn;
int count(string s) {
	int cnt = 0; int best = 0;
	bool ret = false;
	for (int i = 1; i < s.size(); i++) {
		if (s[i] == '1' || s[i-1]=='1') ret=true;
		if (s[i-1]==s[i] && s[i]=='1') cnt++;
		else cnt=0;
		best=max(best,cnt);
	} return (ret ? best+1 : 0);
}

signed main() {
	int n,m; cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cin >> field[i][j];
		}
	} for (int i = 1; i <= n; i++) {
		string t="";
		for (int j = 1; j <= m; j++) t+=field[i][j];
		int x = count(t);
		if (x>0) mn1=min(mn1,x);
	} for (int j = 1; j <= m; j++) {
		string t="";
		for (int i = 1; i <= n; i++) t+=field[i][j];
		int x = count(t);
		if (x>0) mn2=min(mn2, x);
	}
	cout << ((maxn==mn1 || maxn==mn2) ? 0 : mn1*mn2) << '\n';
}

Compilation message (stderr)

bomb.cpp: In function 'long long int count(std::string)':
bomb.cpp:10:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |  for (int i = 1; i < s.size(); i++) {
      |                  ~~^~~~~~~~~~

• Subtask 1: 8 / 100