Submission #666292

#	Time	Username	Problem	Language	Result	Execution time	Memory
666292		jamezzz	Boxes with souvenirs (IOI15_boxes)	C++17	Compilation error	0 ms	0 KiB

boxes

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

#define LINF 1023456789123456789
typedef long long ll;
#define maxn 10000005

ll pfx[maxn], sfx[maxn];

ll delivery(int N, int K, int L, int p[]){
    sort(p, p + N);
    for (int i = 0; i < N; ++i) {
        if (2 * p[i] > L) {
            sfx[i % K] += (L - p[i]) * 2;
        }
        else {
            sfx[i % K] += L;
        }
    }
    ll ans = LINF;
    for (int i = 0; i < N; ++i) {
        if (2 * p[i] < L) {
            pfx[i % K] += p[i] * 2;
            sfx[i % K] -= L;
        }
        else {
            pfx[i % K] += L;
            sfx[i % K] -= (L - p[i]) * 2;
        }
        ans = min(ans, pfx[i % K] + sfx[(i + 1) % K]);
    }
    return ans;
}

int main(){
    int N, K, L, p[maxn];
    scanf("%d%d%d", &N, &K, &L);
    for(int i = 0; i < N; ++i){
        scanf("%d", &p[i]);
    }
    printf("%lld\n", delivery(N, K, L, p));
}

Compilation message (stderr)

boxes.cpp: In function 'int main()':
boxes.cpp:37:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |     scanf("%d%d%d", &N, &K, &L);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
boxes.cpp:39:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |         scanf("%d", &p[i]);
      |         ~~~~~^~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccTOPrJ4.o: in function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'; /tmp/ccL2wHC4.o:boxes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status