Submission #1365224


Source Code Expand

//by xiqiao
#include<bits/stdc++.h>
#define maxn 100005
using namespace std;
typedef long long ll;
vector <int> v[maxn];
int n,m,flag;
int vis[maxn];
ll ans;
int cnt[4],ge;
int next(int x){if(x==3)return 1;return x+1;}
void dfs(int x,int c){
	cnt[c]++;vis[x]=1;ge++;
	for(int i=0;i<(int)v[x].size();i++){
		if(v[x][i]==x)flag=1;
		if(!vis[v[x][i]]){
			dfs(v[x][i],next(c));
		}
	}
}
int main(){
//	freopen("table.in","r",stdin);
	//freopen("table.out","w",stdout);
	scanf("%d%d",&n,&m);
	for(int i=1;i<=m;i++){
		int x,y;scanf("%d%d",&x,&y);
		v[x].push_back(y);v[y].push_back(x);
	}
	for(int i=1;i<=n;i++){
		if(!vis[i]){
			flag=0;cnt[1]=cnt[2]=cnt[3]=0;ge=0;
			dfs(i,1);
			if(flag){
				ans+=1ll*ge*ge;
			}
			else if(cnt[3]==0){
				ans+=ge-1;
			}
			else{
				ans+=1ll*cnt[1]*cnt[2];
				ans+=1ll*cnt[2]*cnt[3];
				ans+=1ll*cnt[3]*cnt[1];
			}
		}
	}
	printf("%lld\n",ans);
	return 0;
}

Submission Info

Submission Time
Task F - Blackout
User xiqiao
Language C++14 (GCC 5.4.1)
Score 0
Code Size 944 Byte
Status WA
Exec Time 42 ms
Memory 12416 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:24:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:26:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   int x,y;scanf("%d%d",&x,&y);
                              ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 1700
Status
AC × 3
AC × 20
WA × 33
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
All 0_00.txt, 0_01.txt, 0_02.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
Case Name Status Exec Time Memory
0_00.txt AC 2 ms 2560 KB
0_01.txt AC 2 ms 2560 KB
0_02.txt AC 2 ms 2560 KB
1_00.txt AC 2 ms 2560 KB
1_01.txt AC 3 ms 2944 KB
1_02.txt AC 31 ms 6144 KB
1_03.txt AC 34 ms 12416 KB
1_04.txt AC 33 ms 12416 KB
1_05.txt WA 33 ms 12288 KB
1_06.txt AC 34 ms 12288 KB
1_07.txt AC 34 ms 12288 KB
1_08.txt WA 34 ms 12288 KB
1_09.txt AC 34 ms 12288 KB
1_10.txt WA 34 ms 12416 KB
1_11.txt AC 33 ms 12288 KB
1_12.txt WA 33 ms 12288 KB
1_13.txt WA 33 ms 12288 KB
1_14.txt AC 25 ms 6520 KB
1_15.txt AC 25 ms 6520 KB
1_16.txt WA 25 ms 6520 KB
1_17.txt AC 18 ms 3840 KB
1_18.txt WA 40 ms 7424 KB
1_19.txt WA 40 ms 7424 KB
1_20.txt WA 40 ms 7296 KB
1_21.txt WA 41 ms 7424 KB
1_22.txt WA 41 ms 7296 KB
1_23.txt WA 40 ms 7424 KB
1_24.txt WA 40 ms 7296 KB
1_25.txt WA 41 ms 7296 KB
1_26.txt WA 41 ms 7424 KB
1_27.txt WA 40 ms 7296 KB
1_28.txt WA 42 ms 7296 KB
1_29.txt WA 40 ms 7296 KB
1_30.txt WA 40 ms 7296 KB
1_31.txt WA 42 ms 7296 KB
1_32.txt WA 41 ms 7296 KB
1_33.txt WA 41 ms 7424 KB
1_34.txt WA 39 ms 7168 KB
1_35.txt AC 35 ms 6400 KB
1_36.txt WA 37 ms 6912 KB
1_37.txt WA 40 ms 7296 KB
1_38.txt AC 34 ms 6016 KB
1_39.txt AC 32 ms 5760 KB
1_40.txt WA 40 ms 7296 KB
1_41.txt WA 40 ms 7424 KB
1_42.txt WA 38 ms 6656 KB
1_43.txt AC 36 ms 6528 KB
1_44.txt WA 39 ms 7168 KB
1_45.txt AC 31 ms 5376 KB
1_46.txt WA 40 ms 7296 KB
1_47.txt WA 40 ms 7296 KB
1_48.txt WA 35 ms 6272 KB
1_49.txt WA 37 ms 6912 KB