제출 #36280

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
36280		Kerim	Collider (IZhO11_collider)	C++14	100 / 100	279 ms	2992 KiB

collider

#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("avx") 
#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;}
const int N=1e6+7;
char s[N];
int main(){
    //~ freopen("file.in", "r", stdin);
    int n,q;
    scanf("%d%d",&n,&q);
    scanf("%s",s+1);
    while(q--){
		char type;
		scanf(" %c",&type);
		if(type=='a'){
			int l,r;
			scanf("%d%d",&l,&r);
			if(l>r){
				swap(l,r);
				char jump=s[r];
				for(int i=r-1;i>=l;i--)	
					s[i+1]=s[i];
				s[l]=jump;	
			}
			else{
				char jump=s[l];	
				for(int i=l+1;i<=r;i++)
					s[i-1]=s[i];
				s[r]=jump;	
			}
		}
		else{
			int p;
			scanf("%d",&p);
			printf("%c\n",s[p]);
		}	
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

collider.cpp: In function 'int main()':
collider.cpp:27:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&q);
                        ^
collider.cpp:28:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",s+1);
                    ^
collider.cpp:31:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c",&type);
                     ^
collider.cpp:34:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d%d",&l,&r);
                       ^
collider.cpp:51:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&p);
                  ^

• Subtask 1: 100 / 100