제출 #918279

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
918279		eggx50000	Sprinkler (JOI22_sprinkler)	C++14	9 / 100	326 ms	103744 KiB

sprinkler

#include <iostream>
#include <vector>
using namespace std;
using ll = long long;

int n, a, b, jo[200099], q;
ll l, arr[200099], dist[200099][45];
vector <int> vec[200099];
vector <ll> ret;
ll x, y, z, w;

void dfs(int node, int par){
    jo[node] = par;
    for(int &e : vec[node]){
        if(e == par) continue;
        dfs(e, node);
    }

}

int main()
{
    scanf("%d %lld", &n, &l);
    for(int i = 1; i < n; i ++){
        scanf("%d %d", &a, &b);
        vec[a].push_back(b);
        vec[b].push_back(a);
    }
    dfs(1, 0);
    for(int i = 1; i <= n; i ++){
        scanf("%lld", arr + i);
    }
    for(int i = 0; i <= n; i ++){
        for(int j = 0; j <= 40; j ++){
            dist[i][j] = 1;
        }
    }
    scanf("%d", &q);
    while(q --){
        scanf("%lld %lld", &x, &y);
        if(x == 1){
            scanf("%lld %lld", &z, &w);
            dist[y][z] = dist[y][z] * w % l;
            if(z == 1) dist[jo[y]][0] = dist[jo[y]][0] * w % l;
        }
        else{
            ll r = arr[y];
            r = r * dist[y][0] % l * dist[jo[y]][1] % l * dist[y][1] % l;

            ret.push_back(r);
        }
    }
    for(ll &e : ret){
        printf("%lld\n", e);
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

sprinkler.cpp: In function 'int main()':
sprinkler.cpp:23:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |     scanf("%d %lld", &n, &l);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
sprinkler.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         scanf("%d %d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~
sprinkler.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         scanf("%lld", arr + i);
      |         ~~~~~^~~~~~~~~~~~~~~~~
sprinkler.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
sprinkler.cpp:40:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         scanf("%lld %lld", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~
sprinkler.cpp:42:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |             scanf("%lld %lld", &z, &w);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 3
• Subtask 2: 9 / 9
• Subtask 3: 0 / 29
• Subtask 4: 0 / 12
• Subtask 5: 0 / 30
• Subtask 6: 0 / 17