Submission #891542

#	Time^UTC-0	Username	Problem	Language	Result	Execution time	Memory
891542	2023-12-23 08:11:35	fanwen	Sum Zero (RMI20_sumzero)	C++14	0 / 100	6 ms	31832 KiB

This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.

sumzero

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#include <bits/stdc++.h>
 
using namespace std;
 
#define fi first
#define se second
#define ll long long
#define file(name)                  \
    if(fopen(name".inp", "r"))      \
        freopen(name".inp", "r", stdin), freopen(name".out", "w", stdout);
 
const int MAX = 4e5 + 5;
 
int n, a[MAX], q, f[20][MAX];
 
void you_make_it(void) {
    long long pref = 0;
    map <long long, int> dd;
    cin >> n;
    memset(f, -1, sizeof f);
    dd[0] = 0;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        pref += a[i];
        if(dd.count(pref)) f[0][i] = dd[pref];
        f[0][i] = max(f[0][i - 1], f[0][i]);
        dd[pref] = i;
    //    cout << f[0][i] << " \n"[i == n];
    }
    for (int i = 1; i < 20; ++i) {
 
 
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Compilation message (stderr)

sumzero.cpp: In function 'int main()':
sumzero.cpp:10:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |         freopen(name".inp", "r", stdin), freopen(name".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sumzero.cpp:51:4: note: in expansion of macro 'file'
   51 |    file("sumzero");
      |    ^~~~
sumzero.cpp:10:49: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |         freopen(name".inp", "r", stdin), freopen(name".out", "w", stdout);
      |                                          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
sumzero.cpp:51:4: note: in expansion of macro 'file'
   51 |    file("sumzero");
      |    ^~~~

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