Submission #997395

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Source Code Expand

#include <vector>
#include <iostream>
#include <algorithm>
#pragma warning(disable : 4996)
using namespace std;
int n, m;
int main() {
	scanf("%d%d", &n, &m);
	vector<vector<int> > a(n, vector<int>(m));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			scanf("%d", &a[i][j]);
		}
	}
	bool flag = true;
	for (int i = 1; i < n; i++) {
		if (a[i - 1][0] > a[i][0]) flag = false;
	}
	if (!flag) {
		cout << -1 << endl;
	}
	else {
		int cnt = 0;
		for (int i = 1; i < n; i++) {
			while (a[i - 1] >= a[i]) {
				int sum = a[i][0];
				for (int j = 1; j < m; j++) {
					sum += a[i][j];
					a[i][j] = sum;
				}
				cnt++;
			}
		}
		cout << cnt << endl;
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
                       ^
./Main.cpp:12:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d", &a[i][j]);
                         ^

Judge Result