Submission #1148996

#	Time	Username	Problem	Language	Result	Execution time	Memory
1148996		blackslex	Poi (IOI09_poi)	C++20	100 / 100	200 ms	16184 KiB

poi

#include<bits/stdc++.h>

using namespace std;
using tp = tuple<int, int, int>;

const int N = 2005;
int n, m, p, a[N][N], b[N], cnt[N], cnt2[N];

int main() {
    scanf("%d %d %d", &n, &m, &p);
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            scanf("%d", &a[i][j]);
            cnt[j] += 1 - a[i][j];
            cnt2[i] += a[i][j];
        }
    }
    vector<tp> c;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            b[i] += cnt[j] * a[i][j];
        }
        c.emplace_back(b[i], cnt2[i], -i);
    }
    sort(c.rbegin(), c.rend());
    int ans = -1;
    for (int i = 0; i < n; i++) {
        if (get<2>(c[i]) == -p) {ans = i; break;}
    }
    assert(ans != -1);
    printf("%d %d", get<0>(c[ans]), ans + 1);
}

Compilation message (stderr)

poi.cpp: In function 'int main()':
poi.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     scanf("%d %d %d", &n, &m, &p);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
poi.cpp:13:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |             scanf("%d", &a[i][j]);
      |             ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100