이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#define ll long long
using namespace std;
int n, m, arr[1010][1010], pref[2][1010][1010], w, h, mxh;
ll ans;
int main() {
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
for(int i=1; i<=n; i++) {
for(int j=1; j<=m; j++) {
cin >> arr[i][j];
}
}
for(int i=1; i<=n; i++) {
for(int j=1; j<=m; j++) {
if(arr[i][j] == arr[i][j-1]) {
pref[0][i][j] = pref[0][i][j-1] + 1;
} else {
pref[0][i][j] = 1;
}
}
}
for(int j=1; j<=m; j++) {
for(int i=1; i<=n; i++) {
if(arr[i][j] == arr[i-1][j]) {
pref[1][i][j] = pref[1][i-1][j] + 1;
} else {
pref[1][i][j] = 1;
}
}
}
for(int i=1; i<=n; i++) {
for(int j=1; j<=m; j++) {
w = pref[0][i][j];
h = pref[1][i][j];
ans += h;
for(int k=j-1; k>j-w; k--) {
h = max(h, pref[1][i][k]);
ans += h;
}
}
}
cout << ans;
return 0;
}
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