# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
713743 | ALTAKEXE | Bob (COCI14_bob) | C++14 | 126 ms | 17888 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <cstdio>
#include <stack>
#include <algorithm>
#include <cstring>
using namespace std;
int n, m, k;
int a[1005][1005];
int s[1005][1005];
struct t{
int cnt;
int v, h;
long long ms;
t (int _cnt = 0, int _v = 0, int _h = 0, long long _ms = 0){
cnt = _cnt;
v = _v; h = _h;
ms = _ms;
}
};
int main (){
long long ans=0;
scanf("%d %d", &n, &m);
for (int i = 0; i < n; ++i)
for (int j = 0; j < m; ++j)
scanf("%d", &a[i][j]);
for (int i = 0; i < n; ++i){
stack <t> S;
S.push(t(0, -1, 0, 0));
for (int j = 0; j < m; ++j){
s[i][j] = 1;
if (i > 0 && a[i-1][j] == a[i][j]) s[i][j] += s[i-1][j];
int sum = 1;
while (S.top().v == a[i][j] && S.top().h >= s[i][j]){
sum += S.top().cnt;
S.pop();
}
long long my_s = sum * (long long )s[i][j];
if (S.top().v == a[i][j]) my_s += S.top().ms;
ans += my_s;
S.push(t(sum, a[i][j], s[i][j], my_s));
}
}
printf("%lld", ans);
return 0;
}
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