제출 #60032

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
60032		Kerim	Election (BOI18_election)	C++17	28 / 100	3085 ms	1528 KiB

election

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
char s[MAXN];
int vis[MAXN],par[MAXN];
int main(){
    //~ freopen("file.in", "r", stdin);
    int n;
    scanf("%d",&n);
    scanf("%s",s+1);
    for(int i=1;i<=n;i++){
		par[i]=par[i-1];
		if(s[i]=='C')
			par[i]++;
		else
			par[i]--;
	}
    int q;
    scanf("%d",&q);
    while(q--){
		int l,r;
		scanf("%d%d",&l,&r);
		int last=l-1;
		for(int i=l;i<=r;i++)
			if(par[i]==par[last]-1){
				last=i;
				vis[i]=1;
			}
		int sum=0,mn=INF;
		for(int i=r;i>=l;i--)
			if(!vis[i]){
				sum+=(s[i]=='C');
				sum-=(s[i]=='T');
				umin(mn,sum);
			}
		int ans=0;	
		for(int i=l;i<=r;i++){
			ans+=vis[i];
			vis[i]=0;
		}	
		printf("%d\n",ans+max(0,-mn));
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

election.cpp: In function 'int main()':
election.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
election.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",s+1);
     ~~~~~^~~~~~~~~~
election.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&q);
     ~~~~~^~~~~~~~~
election.cpp:38:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&l,&r);
   ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 28 / 28
• Subtask 2: 0 / 54
• Subtask 3: 0 / 18