Submission #870140

#	Time	Username	Problem	Language	Result	Execution time	Memory
870140		inawah	Garage (IOI09_garage)	C++14	100 / 100	1 ms	600 KiB

garage

#include <cstdio>
#include <queue>
using namespace std;

#define MAXN 105
#define MAXM 2005
int r[MAXN], w[MAXM], p[MAXM];
queue<int> q;
bool vis[MAXN];

int main() {
    int N, M;
    scanf("%d %d\n", &N, &M);
    for (int i = 1; i <= N; ++i) {
        scanf("%d\n", &r[i]);
    }
    for (int i = 1; i <= M; ++i) {
        scanf("%d\n", &w[i]);
    }
    int ans = 0;
    for (int i = 1; i <= 2*M; ++i) {
        int a;
        scanf("%d\n", &a);
        if (a > 0) {
            int j;
            for (j = 1; j <= N && vis[j]; ++j);
            if (j <= N) {
                vis[j] = true;
                p[a] = j;
            } else {
                q.push(a);
            }
        } else {
            vis[p[-a]] = false;
            if (!q.empty()) {
                int f = q.front();
                p[f] = p[-a];
                vis[p[f]] = true;
                q.pop();
            }
            ans += w[-a]*r[p[-a]];
        }
    }
    printf("%d\n", ans);
    return 0;
}

Compilation message (stderr)

garage.cpp: In function 'int main()':
garage.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     scanf("%d %d\n", &N, &M);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
garage.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf("%d\n", &r[i]);
      |         ~~~~~^~~~~~~~~~~~~~~
garage.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         scanf("%d\n", &w[i]);
      |         ~~~~~^~~~~~~~~~~~~~~
garage.cpp:23:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         scanf("%d\n", &a);
      |         ~~~~~^~~~~~~~~~~~

• Subtask 1: 100 / 100