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OI-codes/problem/P1130/P1130.cpp
2020-11-01 16:49:20 +08:00

26 lines
578 B
C++

#include<bits/stdc++.h>
using namespace std;
int main() {
long long n, m, a[2005][2005], f[2005][2005];
cin >> n >> m;
for(int i = 1 ; i <= m ; i++) {
for(int j = 1 ; j <= n ; j++) {
cin >> a[j][i];
}
}
for(int i = 1 ; i <= n ; i++) {
f[i-1][0] = f[i-1][m];
for(int j = 1 ; j <= m ; j++) {
f[i][j] = a[i][j] + min(f[i-1][j], f[i-1][j-1]);
}
}
long long ans = f[n][1];
for(int i = 2 ; i <= m ; i++) {
ans = min(ans, f[n][i]);
}
cout << ans << endl;
return 0;
}