Submission #1691519


Source Code Expand

#include "bits/stdc++.h"
using namespace std;
const int N = 305;
const int inf = 1e9 + 9;
int n;
int graph[N][N];
vector < pair < int , pair < int , int > > > v;
unsigned dp[N][N];
long long ans;
int main(){
	scanf("%d" , &n);
	for(int i = 1 ; i <= n ; ++i){
		for(int j = 1 ; j <= n ; ++j){
			scanf("%d" , &graph[i][j]);
			if(j > i){
				v.push_back({graph[i][j] , {i , j}});
			}
			dp[i][j] = inf;
		}
		dp[i][i] = 0;
	}
	sort(v.begin() , v.end());
	for(auto it : v){
		int a = it.second.first;
		int b = it.second.second;
		int c = it.first;
		if(dp[a][b] < c){
			printf("-1\n");
			return 0;
		}
		if(dp[a][b] == c){
			continue;
		}
		ans += c;
		for(int i = 1 ; i <= n ; ++i){
			for(int j = 1 ; j <= n ; ++j){
				dp[i][j] = min(dp[i][j] , min(dp[i][a] + dp[b][j] , dp[i][b] + dp[a][j]) + c);
			}
		}
	}
	printf("%lld\n" , ans);
}

Submission Info

Submission Time
Task D - Restoring Road Network
User rajat1603
Language C++14 (GCC 5.4.1)
Score 500
Code Size 883 Byte
Status AC
Exec Time 212 ms
Memory 1656 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d" , &n);
                  ^
./Main.cpp:14:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d" , &graph[i][j]);
                              ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 4
AC × 17
Set Name Test Cases
Sample subtask0_0.txt, subtask0_1.txt, subtask0_2.txt, subtask0_3.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, subtask0_0.txt, subtask0_1.txt, subtask0_2.txt, subtask0_3.txt
Case Name Status Exec Time Memory
01.txt AC 75 ms 1656 KB
02.txt AC 76 ms 1656 KB
03.txt AC 77 ms 1656 KB
04.txt AC 77 ms 1656 KB
05.txt AC 79 ms 1656 KB
06.txt AC 86 ms 1656 KB
07.txt AC 94 ms 1656 KB
08.txt AC 209 ms 1656 KB
09.txt AC 212 ms 1656 KB
10.txt AC 94 ms 1656 KB
11.txt AC 113 ms 1656 KB
12.txt AC 67 ms 1656 KB
13.txt AC 1 ms 256 KB
subtask0_0.txt AC 1 ms 256 KB
subtask0_1.txt AC 1 ms 256 KB
subtask0_2.txt AC 1 ms 256 KB
subtask0_3.txt AC 1 ms 256 KB