제출 #592877

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
592877		hyakup	Simple game (IZhO17_game)	C++17	0 / 100	1 ms	212 KiB

game

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#include <bits/stdc++.h>
using namespace std;

const int maxn = 1000010;
int bit[maxn], height[maxn];

int n, m;

void update( int i, int v){
    
    for( int j = i; j <= n; j += j&-j) bit[j] += v; 
    
}


int query( int i ){
    
    int soma = 0;
    
    for (int j = i; j > 0; j -= j&-j) soma += bit[j];
    
    return soma;
}


int main()
{
    scanf("%d %d", &n, &m);
    
    
    for( int i = 1; i <= n; i++){
        scanf("%d", &height[i]);
        
        update( height[i], 1 );
        
    }
    
    for( int i = 0; i < m; i++){
        
        int type; scanf("%d", &type);
        
        
        if( type == 1 ){
            int pos, val; scanf("%d %d", &pos, &val);
            
            update( height[pos], -1);
            
            height[pos] = val;
            
            update( height[pos], 1);
        }
        
        else{
            
            int h; scanf("%d", &h);    
            
            printf("%d\n", query(h));
        }
    }
}

컴파일 시 표준 에러 (stderr) 메시지

game.cpp: In function 'int main()':
game.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
game.cpp:40:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         scanf("%d", &height[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~
game.cpp:48:24: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         int type; scanf("%d", &type);
      |                   ~~~~~^~~~~~~~~~~~~
game.cpp:52:32: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |             int pos, val; scanf("%d %d", &pos, &val);
      |                           ~~~~~^~~~~~~~~~~~~~~~~~~~~
game.cpp:63:25: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |             int h; scanf("%d", &h);
      |                    ~~~~~^~~~~~~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 27
• Subtask 3: 0 / 51