I remember that once tourist got fst due to wrong compiler selected.↵
↵
This time I got the same problem when I was doing [463C](https://codeforces.net/contest/463/problem/C)↵
↵
I got accecpted with **GNU G++17 7.3.0**, but TLE using **same code** with **GNU G++17 9.2.0(64 bit, msys2)**↵
↵
The code is here↵
↵
```cpp↵
#include <bits/stdc++.h>↵
using namespace std;↵
↵
#define rep(i, s, t) for (int i = (int)(s); i <= (int)(t); ++ i)↵
#define deb(x) cout << #x << " = " << x << endl↵
#define ll long long↵
#define int long long↵
const int N = 2e3 + 10;↵
ll n, a[N][N];↵
ll l[N << 1], r[N << 1];↵
↵
inline void solve() {↵
scanf("%lld", &n);↵
rep(i, 1, n) rep(j, 1, n)↵
scanf("%lld", &a[i][j]), l[i + j] += a[i][j], r[n + i - j] += a[i][j];↵
int x1, x2, y1, y2, val1 = -1, val2 = -1;↵
rep(i, 1, n) rep(j, 1, n) {↵
int val = l[i + j] + r[n + i - j] - a[i][j];↵
if ((i + j) & 1) {↵
if (val > val1) val1 = val, x1 = i, y1 = j;↵
} else {↵
if (val > val2) val2 = val, x2 = i, y2 = j;↵
}↵
}↵
printf("%lld\n", val1 + val2);↵
printf("%lld %lld\n%lld %lld", x1, y1, x2, y2);↵
}↵
↵
signed main() {↵
int t = 1; //scanf("%d", &t);↵
while (t --) solve();↵
}↵
```↵
↵
And the submissions are here:↵
↵
- TLE: https://codeforces.net/contest/463/submission/121871272↵
- AC: https://codeforces.net/contest/463/submission/121817055↵
↵
Is there anybody who knows the reason?↵
↵
THX :D↵
↵
This time I got the same problem when I was doing [463C](https://codeforces.net/contest/463/problem/C)↵
↵
I got accecpted with **GNU G++17 7.3.0**, but TLE using **same code** with **GNU G++17 9.2.0(64 bit, msys2)**↵
↵
The code is here↵
↵
```cpp↵
#include <bits/stdc++.h>↵
using namespace std;↵
↵
#define rep(i, s, t) for (int i = (int)(s); i <= (int)(t); ++ i)↵
#define deb(x) cout << #x << " = " << x << endl↵
#define ll long long↵
#define int long long↵
const int N = 2e3 + 10;↵
ll n, a[N][N];↵
ll l[N << 1], r[N << 1];↵
↵
inline void solve() {↵
scanf("%lld", &n);↵
rep(i, 1, n) rep(j, 1, n)↵
scanf("%lld", &a[i][j]), l[i + j] += a[i][j], r[n + i - j] += a[i][j];↵
int x1, x2, y1, y2, val1 = -1, val2 = -1;↵
rep(i, 1, n) rep(j, 1, n) {↵
int val = l[i + j] + r[n + i - j] - a[i][j];↵
if ((i + j) & 1) {↵
if (val > val1) val1 = val, x1 = i, y1 = j;↵
} else {↵
if (val > val2) val2 = val, x2 = i, y2 = j;↵
}↵
}↵
printf("%lld\n", val1 + val2);↵
printf("%lld %lld\n%lld %lld", x1, y1, x2, y2);↵
}↵
↵
signed main() {↵
int t = 1; //scanf("%d", &t);↵
while (t --) solve();↵
}↵
```↵
↵
And the submissions are here:↵
↵
- TLE: https://codeforces.net/contest/463/submission/121871272↵
- AC: https://codeforces.net/contest/463/submission/121817055↵
↵
Is there anybody who knows the reason?↵
↵
THX :D↵