Submission #1443896


Source Code Expand

#include <iostream>
#include <vector>
#include <cstdio>
#include <algorithm>
#include <utility>
#include <string>
#include <cmath>
#include <set>
#include <functional>
#include <map>
#include <queue>
#include <cstring>
#include <stack>
#include <iomanip>
#include <climits>
#include <numeric>
#include <cassert>
using namespace std;
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define show(x) cout << #x << " = " << x << endl;
typedef long long ll;
typedef pair<int,int> pii;
struct edge{
    int to;
    ll w;
};
vector<edge>G[200005];
bool used[200005];
ll min_r,min_c;
ll cost[200005];
void dfs(int s){
    used[s] = true;
    rep(i,G[s].size()){
        if(!used[G[s][i].to]){
            cost[G[s][i].to] = G[s][i].w - cost[s];
            if(G[s][i].to >100000){
                min_c = min(min_c, cost[G[s][i].to]);
            }else{
                min_r = min(min_r, cost[G[s][i].to]);
            }
            dfs(G[s][i].to);
        }else{
            if(cost[G[s][i].to] != G[s][i].w - cost[s]){
                cout << "No" << endl;
                exit(0);
            }
        }
    }
}
int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int h, w;
    cin >> h >> w;
    int n;
    cin >> n;
    vector<int> r(n), c(n);
    vector<ll> a(n);
    rep(i,n){
        cin >> r[i] >> c[i] >> a[i];
        c[i] += 100000;
        G[r[i]].push_back(edge{c[i], a[i]});
        G[c[i]].push_back(edge{r[i], a[i]});
    }
    rep(i,n){
        if(!used[r[i]]){
            min_r = 0;
            min_c = 1LL<<60;
            dfs(r[i]);
            if(min_r + min_c < 0){
                cout <<"No" << endl;
                return 0;
            }
        }
    }
    cout << "Yes" << endl;
}

Submission Info

Submission Time
Task D - Grid and Integers
User polyomino
Language C++14 (GCC 5.4.1)
Score 800
Code Size 1793 Byte
Status AC
Exec Time 65 ms
Memory 18176 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 800 / 800
Status
AC × 5
AC × 69
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 0_04.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 0_04.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt, 1_29.txt, 1_30.txt, 1_31.txt, 1_32.txt, 1_33.txt, 1_34.txt, 1_35.txt, 1_36.txt, 1_37.txt, 1_38.txt, 1_39.txt, 1_40.txt, 1_41.txt, 1_42.txt, 1_43.txt, 1_44.txt, 1_45.txt, 1_46.txt, 1_47.txt, 1_48.txt, 1_49.txt, 1_50.txt, 1_51.txt, 1_52.txt, 1_53.txt, 1_54.txt, 1_55.txt, 1_56.txt, 1_57.txt, 1_58.txt, 1_59.txt, 1_60.txt, 1_61.txt, 1_62.txt, 1_63.txt
Case Name Status Exec Time Memory
0_00.txt AC 3 ms 4992 KB
0_01.txt AC 3 ms 4992 KB
0_02.txt AC 3 ms 4992 KB
0_03.txt AC 3 ms 4992 KB
0_04.txt AC 3 ms 4992 KB
1_00.txt AC 3 ms 4992 KB
1_01.txt AC 3 ms 4992 KB
1_02.txt AC 3 ms 4992 KB
1_03.txt AC 3 ms 4992 KB
1_04.txt AC 3 ms 4992 KB
1_05.txt AC 3 ms 4992 KB
1_06.txt AC 47 ms 13696 KB
1_07.txt AC 50 ms 13696 KB
1_08.txt AC 51 ms 13696 KB
1_09.txt AC 52 ms 13696 KB
1_10.txt AC 58 ms 13440 KB
1_11.txt AC 56 ms 13440 KB
1_12.txt AC 61 ms 18176 KB
1_13.txt AC 59 ms 18176 KB
1_14.txt AC 62 ms 18176 KB
1_15.txt AC 60 ms 18176 KB
1_16.txt AC 58 ms 17280 KB
1_17.txt AC 61 ms 17920 KB
1_18.txt AC 56 ms 17280 KB
1_19.txt AC 65 ms 16896 KB
1_20.txt AC 34 ms 10624 KB
1_21.txt AC 16 ms 7808 KB
1_22.txt AC 5 ms 5888 KB
1_23.txt AC 32 ms 10624 KB
1_24.txt AC 41 ms 11904 KB
1_25.txt AC 33 ms 10368 KB
1_26.txt AC 6 ms 5504 KB
1_27.txt AC 8 ms 6656 KB
1_28.txt AC 52 ms 13696 KB
1_29.txt AC 18 ms 8192 KB
1_30.txt AC 49 ms 13056 KB
1_31.txt AC 21 ms 9088 KB
1_32.txt AC 42 ms 11776 KB
1_33.txt AC 52 ms 13056 KB
1_34.txt AC 8 ms 6528 KB
1_35.txt AC 40 ms 11136 KB
1_36.txt AC 9 ms 6784 KB
1_37.txt AC 22 ms 8448 KB
1_38.txt AC 38 ms 11264 KB
1_39.txt AC 13 ms 7680 KB
1_40.txt AC 36 ms 11008 KB
1_41.txt AC 18 ms 8960 KB
1_42.txt AC 43 ms 11776 KB
1_43.txt AC 32 ms 10624 KB
1_44.txt AC 41 ms 11904 KB
1_45.txt AC 13 ms 7424 KB
1_46.txt AC 47 ms 12800 KB
1_47.txt AC 17 ms 8064 KB
1_48.txt AC 16 ms 7424 KB
1_49.txt AC 7 ms 6272 KB
1_50.txt AC 28 ms 9600 KB
1_51.txt AC 47 ms 13184 KB
1_52.txt AC 6 ms 6656 KB
1_53.txt AC 9 ms 7168 KB
1_54.txt AC 16 ms 7808 KB
1_55.txt AC 20 ms 8320 KB
1_56.txt AC 33 ms 10624 KB
1_57.txt AC 52 ms 13440 KB
1_58.txt AC 44 ms 12032 KB
1_59.txt AC 5 ms 6144 KB
1_60.txt AC 3 ms 4992 KB
1_61.txt AC 3 ms 4992 KB
1_62.txt AC 3 ms 4992 KB
1_63.txt AC 3 ms 4992 KB