Submission #207324

#	Time	Username	Problem	Language	Result	Execution time	Memory
207324		DodgeBallMan	Garage (IOI09_garage)	C++14	100 / 100	6 ms	376 KiB

garage

#include <bits/stdc++.h>
 
#define long long long
 
using namespace std;
 
const int N = 2e3+5;
 
int n, m, pos[N];
long r[N], w[N];
queue<int> Q;
priority_queue<int, vector<int>, greater<int> > PQ;
 
int main() {
    scanf("%d %d", &n, &m);
    for(int i = 1; i <= n; i++) scanf("%lld", r+i), PQ.emplace(i);
    for(int i = 1; i <= m; i++) scanf("%lld", w+i);
 
    long ans = 0;
    for(int i = 1, a; i <= 2 * m; i++) {
        scanf("%d", &a);
        if(a > 0) Q.emplace(a);
        else {
            int garage = pos[-a];
            PQ.emplace(garage);
        }
        while(!Q.empty() && !PQ.empty()) {
            int now = Q.front(); Q.pop();
            int garage = PQ.top(); PQ.pop();
            pos[now] = garage;
            ans += r[garage] * w[now];
        }
    }
    printf("%lld\n", ans);
 
    return 0;
}

Compilation message (stderr)

garage.cpp: In function 'int main()':
garage.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~~
garage.cpp:16:51: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 1; i <= n; i++) scanf("%lld", r+i), PQ.emplace(i);
                                 ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
garage.cpp:17:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 1; i <= m; i++) scanf("%lld", w+i);
                                 ~~~~~^~~~~~~~~~~~~
garage.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a);
         ~~~~~^~~~~~~~~~

• Subtask 1: 100 / 100