Submission #261702

#	Time	Username	Problem	Language	Result	Execution time	Memory
261702		cheeheng	Colors (RMI18_colors)	C++14	7 / 100	79 ms	7680 KiB

colors

#include <bits/stdc++.h>
using namespace std;

typedef pair<int, int> ii;

vector<int> AdjList[150005];
int a[150005];
int b[150005];
ii ab[150005];

int main(){
    int t;
    scanf("%d", &t);

    while(t --){
        int N, M;
        scanf("%d%d", &N, &M);

        for(int i = 0; i < N; i ++){
            scanf("%d", &a[i]);
        }

        for(int i = 0; i < N; i ++){
            scanf("%d", &b[i]);
        }

        for(int i = 0; i < M; i ++){
            int u, v;
            scanf("%d%d", &u, &v);
            AdjList[u].push_back(v);
            AdjList[v].push_back(u);
        }

        assert((long long)M == (long long)N*(N-1)/2);

        multiset<int> s;
        for(int i = 0; i < N; i ++){
            ab[i] = ii(a[i], b[i]);
            s.insert(a[i]);
        }
        sort(ab, ab+N, greater<ii>());

        int ans = 1;
        for(int i = 0; i < N; i ++){
            if(ab[i].first == ab[i].second){continue;}
            if(ab[i].first < ab[i].second){
                ans = 0;
                break;
            }
            if(s.find(ab[i].second) != s.end()){

            }else{
                ans = 0;
                break;
            }

            s.erase(s.find(ab[i].first));
        }

        printf("%d\n", ans);
    }


    return 0;
}

Compilation message (stderr)

colors.cpp: In function 'int main()':
colors.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &t);
     ~~~~~^~~~~~~~~~
colors.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &N, &M);
         ~~~~~^~~~~~~~~~~~~~~~
colors.cpp:20:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &a[i]);
             ~~~~~^~~~~~~~~~~~~
colors.cpp:24:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &b[i]);
             ~~~~~^~~~~~~~~~~~~
colors.cpp:29:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d%d", &u, &v);
             ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 7 / 7
• Subtask 3: 0 / 8
• Subtask 4: 0 / 15
• Subtask 5: 0 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 10
• Subtask 8: 0 / 22