Submission #1084559

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
10845592024-09-06 11:39:42KasymKBridges (APIO19_bridges)C++17
0 / 100
3 ms4956 KiB
#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N = 5e4+5;
struct node{
int val, l, r;
} seg[N<<2];
int v[N];
void build(int x, int l, int r){
seg[x].l = l, seg[x].r = r;
if(l == r){
seg[x].val = v[l];
return;
}
int mid = (l+r)>>1;
build(x<<1, l, mid);
 
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Compilation message (stderr)

bridges.cpp: In function 'int main()':
bridges.cpp:63:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |     freopen("file.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
bridges.cpp:65:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     scanf("%d%d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~
bridges.cpp:68:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |         scanf("%d%d%d", &a, &b, &x);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~
bridges.cpp:73:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
bridges.cpp:76:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |         scanf("%d", &op);
      |         ~~~~~^~~~~~~~~~~
bridges.cpp:79:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |             scanf("%d%d", &b, &r);
      |             ~~~~~^~~~~~~~~~~~~~~~
bridges.cpp:85:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |         scanf("%d%d", &s, &w);
      |         ~~~~~^~~~~~~~~~~~~~~~
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