Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] #import<stdio.h> ^~~~~~ main.cpp:2:21: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] int v[1000001];main(){freopen("distincte2.in","r",stdin);freopen("distincte2.out","w",stdout);int n,m,i,a,b;scanf("%d%d",&n,&m);for(i=0; i<n; i++)scanf("%d", &a),v[a]=1;for(i=1;i<1000001;i++)v[i]+=v[i-1];for(i=0;i<m;i++)scanf("%d%d", &a, &b),printf("%d\n", v[b]-v[a-1]);} ^ main.cpp: In function 'int main()': main.cpp:2:57: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] int v[1000001];main(){freopen("distincte2.in","r",stdin);freopen("distincte2.out","w",stdout);int n,m,i,a,b;scanf("%d%d",&n,&m);for(i=0; i<n; i++)scanf("%d", &a),v[a]=1;for(i=1;i<1000001;i++)v[i]+=v[i-1];for(i=0;i<m;i++)scanf("%d%d", &a, &b),printf("%d\n", v[b]-v[a-1]);} ^ main.cpp:2:94: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] int v[1000001];main(){freopen("distincte2.in","r",stdin);freopen("distincte2.out","w",stdout);int n,m,i,a,b;scanf("%d%d",&n,&m);for(i=0; i<n; i++)scanf("%d", &a),v[a]=1;for(i=1;i<1000001;i++)v[i]+=v[i-1];for(i=0;i<m;i++)scanf("%d%d", &a, &b),printf("%d\n", v[b]-v[a-1]);} ^ main.cpp:2:128: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int v[1000001];main(){freopen("distincte2.in","r",stdin);freopen("distincte2.out","w",stdout);int n,m,i,a,b;scanf("%d%d",&n,&m);for(i=0; i<n; i++)scanf("%d", &a),v[a]=1;for(i=1;i<1000001;i++)v[i]+=v[i-1];for(i=0;i<m;i++)scanf("%d%d", &a, &b),printf("%d\n", v[b]-v[a-1]);} ^ main.cpp:2:169: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int v[1000001];main(){freopen("distincte2.in","r",stdin);freopen("distincte2.out","w",stdout);int n,m,i,a,b;scanf("%d%d",&n,&m);for(i=0; i<n; i++)scanf("%d", &a),v[a]=1;for(i=1;i<1000001;i++)v[i]+=v[i-1];for(i=0;i<m;i++)scanf("%d%d", &a, &b),printf("%d\n", v[b]-v[a-1]);} ^ main.cpp:2:270: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int v[1000001];main(){freopen("distincte2.in","r",stdin);freopen("distincte2.out","w",stdout);int n,m,i,a,b;scanf("%d%d",&n,&m);for(i=0; i<n; i++)scanf("%d", &a),v[a]=1;for(i=1;i<1000001;i++)v[i]+=v[i-1];for(i=0;i<m;i++)scanf("%d%d", &a, &b),printf("%d\n", v[b]-v[a-1]);} ^