Submission #165162

#	Time	Username	Problem	Language	Result	Execution time	Memory
165162		Atill83	Bob (COCI14_bob)	C++14	0 / 120	188 ms	25292 KiB

bob

#include <bits/stdc++.h>
#define ff first
#define ss second
#define endl '\n'
using namespace std;
const long long INF = (long long) 1e18;
const int mod = (int) 1e9+7;
const int MAXN = (int) 1e3+5;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
ll n;
ll a[MAXN][MAXN];
ll us[MAXN][MAXN];
ll ans[MAXN][MAXN];

stack<int> s;
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);

    #ifdef Local
        freopen("../IO/int.txt","r",stdin);
        freopen("../IO/out.txt","w",stdout);
    #endif
    int m;
    cin>>n>>m;

    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            cin>>a[i][j];
        }
    }
    ll an = 0;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            us[i][j] = 1;
            if(i != 0 && a[i - 1][j] == a[i][j]) us[i][j] += us[i - 1][j];
        }
    }
    for(ll i = 0; i < n; i++){
        for(ll j = 0; j < m; j++){
            if(j == 0 || a[i][j] != a[i][j - 1]){
                while(!s.empty()) s.pop();
                s.push(j);
                ans[i][j] = us[i][j];
            }else{
                while(!s.empty() && us[i][s.top()] > us[i][j]){
                    s.pop();
                }
                ll l = (s.empty() ? -1 : s.top());
                ans[i][j] += (s.empty() ? 0 : ans[i][s.top()]) + (j - l)*us[i][j];
                s.push(j);
            }
            an += ans[i][j];
            //cout<<ans[i][j]<<" ";
        }//cout<<endl;
    }
    cout<<an<<endl;
    #ifdef Local
        cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 12
• Subtask 3: 0 / 12
• Subtask 4: 0 / 12
• Subtask 5: 0 / 12
• Subtask 6: 0 / 12
• Subtask 7: 0 / 12
• Subtask 8: 0 / 12
• Subtask 9: 0 / 12
• Subtask 10: 0 / 12