oj.uz

Submission #145547

# Submission time Handle Problem Language Result Execution time Memory
145547 2019-08-20T11:27:33 Z surface03 비용 (KOI11_cost) C++14
0 / 24
 10 ms 632 KB 
#include<bits/stdc++.h>
using namespace std;
 
const int LM=105;
struct data{
    int a,b,w;
    bool operator<(const data&r)const{
        return w<r.w;
    }
};
int N,ans,group[LM];
 
vector<data>A;
 
int Find(int n){
    if(group[n]==n)return n;
    return group[n]=Find(group[n]);
}
int main(){
    scanf("%d",&N);
    int i,j,w;
    for(i=1;i<=N;i++)group[i]=i;
    for(i=1;i<=N;i++){
        for(j=1;j<=N;j++){
            scanf("%d",&w);
            if(i<j)A.push_back({i,j,w});
        }
    }
    sort(A.begin(),A.end());
    for(auto&obj:A){
        int ag=Find(obj.a),bg=Find(obj.b);
        int w=obj.w;
        if(ag==bg)continue;
        ans+=w;
        group[bg]=ag;
    }
    printf("%d",ans);
    return 0;
}

Compilation message

cost.cpp: In function 'int main()':
cost.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~
cost.cpp:25:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&w);
             ~~~~~^~~~~~~~~

Subtask #1
0 / 4.8

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 632 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.2

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 632 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -