#include <bits/stdc++.h> using namespace std; typedef pair<int,int> P; int A[1000005]; int B[1000005]; signed main() { cin.sync_with_stdio(false); cin.tie(0); cout.tie(0); int N; cin >> N; int i, j; for(i=0;i<N;i++) cin >> A[i] >> B[i]; queue<int> Q; for(i=0;i<N;i++) { if(A[i] > B[i]+1) { Q.push(i); } } while(!Q.empty()) { int id = Q.front(); Q.pop(); if(A[id] <= B[id]+1) continue; int v = A[id] - B[id]; v /= 2; A[id] -= v*2; A[(id+1)%N] += v; if(A[(id+1)%N]>B[(id+1)%N]+1) { Q.push((id+1)%N); } } bool isPos1 = true; bool isPos2 = false; for(i=0;i<N;i++) { if(A[i]>=2) isPos2 = true; } for(i=0;i<N;i++) { if(A[i]!=B[i]) isPos1 = false; if(A[i]!=B[i]+1) isPos2 = false; assert(A[i]<B[i]+2); } cout << (isPos1||isPos2?"Yes":"No"); }

remittance.cpp: In function 'int main()':
remittance.cpp:12:12: warning: unused variable 'j' [-Wunused-variable]
   12 |     int i, j;
      |            ^